1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Other Radios (Non-Philco)

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Threaded Mode
How do I figure what antenna to use
w4rtc
Senior Member
****
Posts: 594
Threads: 41
Joined: Aug 2010
City: Shepherdsville, KY
#1

06-29-2011, 12:58 AM
Hi all
I have a Motorola tuner, Icon_surprised. The antenna is missing. Icon_sad I know it had a ferrite rod type of antenna Icon_confused. Now the question Icon_rolleyes to replace the ferrite rod how do I figure what uH I need Icon_confused:. Can anyone help me Icon_wink. Antique parts has three 230 uh, 250uH and 650 uH. HHHHHHHeeeeelllllppppp. Joe
Joe Bratcher near Louisville, KY
Find
exray
Phorum Expert
*****
Posts: 893
Threads: 9
Joined: Mar 2008
City: Vieques, PR USA State, Province, Country: PR
#2

06-29-2011, 09:40 AM
The 230 or 250 should work. The winding can be slid along the rod to adjust the inductance as part of the alignment.
Website Find
w4rtc
Senior Member
****
Posts: 594
Threads: 41
Joined: Aug 2010
City: Shepherdsville, KY
#3

06-29-2011, 10:26 AM
Ok I will try the 250. Thanks for your reply Icon_wave . Joe
Joe Bratcher near Louisville, KY
Find
« Next Oldest | Next Newest »
Thread Closed




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
The list of my radio & TV collection!
Hello Peter, Thank you for posting that !! Sincerely Richardradiorich — 09:40 AM
Eico 232 VTVM Schematic
It's a microwave antenna. ?;-p?. I substituted 1N4002s off the 6.3 vac winding for the 1.5 volt battery. Uniprobe is the...RodB — 05:50 PM
Eico 232 VTVM Schematic
Try BAMA for a schematic. Looks like a replacement power source for the D battery has been installed. The tube may be...Chas — 04:51 PM
Eico 232 VTVM Schematic
Is that a battery holder?morzh — 04:43 PM
Eico 232 VTVM Schematic
A friend gave me this Eico 232 VTVM and I'm having trouble locating the schematic for it. This one seems to be a later v...RodB — 04:17 PM
Var resistor id
Considering what it is in series with, I doubt there should be any power requirements. Of course, we should know wher...morzh — 03:23 PM
Var resistor id
Trim pot, about 1/2 watt part of focus divider. As stated 2k ohms. This appears to be a rusty chassis, resolder all ...Chas — 03:19 PM
Var resistor id
Its a Sylvania 400 oscilloscope. here is a clip of r-100. Would be nice to know the current required. Not listed in part...Martinj — 02:10 PM
The list of my radio & TV collection!
Thanks Richard. I hope you enjoy it. Here I have created an English section on the history of radio with videos in Engl...RadioSvit — 10:23 AM
The list of my radio & TV collection!
Hello RadioSvit, first all happy new year ! I will watch your new videos this week. Sincerely Richardradiorich — 09:19 AM

[-]
Who's Online
There are currently 8140 online users. [Complete List]
» 1 Member(s) | 8139 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Other Radios (Non-Philco)